There is a reason behind most challenging behaviour, such as communication or meeting an unmet need, and it is helpful to identify and understand the root causes in order to provide the most appropriate supports. An overview of behaviours, answering questions such as, “why is my child engaging in challenging behavior?”, and “how can I best support my child when they are engaging in this behavior?” We will discuss tools to use to identify possible functions of the behaviour as well as proactive support strategies. We will allow time at the end for questions and discussion.